Code/net/minecraft/world/level/block/TestInstanceBlock.java

package net.minecraft.world.level.block;

import com.mojang.serialization.MapCodec;
import javax.annotation.Nullable;
import net.minecraft.core.BlockPos;
import net.minecraft.world.InteractionResult;
import net.minecraft.world.entity.player.Player;
import net.minecraft.world.level.Level;
import net.minecraft.world.level.block.entity.BlockEntity;
import net.minecraft.world.level.block.entity.TestInstanceBlockEntity;
import net.minecraft.world.level.block.state.BlockBehaviour;
import net.minecraft.world.level.block.state.BlockState;
import net.minecraft.world.phys.BlockHitResult;

public class TestInstanceBlock extends BaseEntityBlock implements GameMasterBlock {
    public static final MapCodec<TestInstanceBlock> CODEC = simpleCodec(TestInstanceBlock::new);

    public TestInstanceBlock(BlockBehaviour.Properties p_391747_) {
        super(p_391747_);
    }

    @Nullable
    @Override
    public BlockEntity newBlockEntity(BlockPos p_392576_, BlockState p_397359_) {
        return new TestInstanceBlockEntity(p_392576_, p_397359_);
    }

    @Override
    protected InteractionResult useWithoutItem(BlockState p_391894_, Level p_393283_, BlockPos p_395877_, Player p_396004_, BlockHitResult p_397949_) {
        if (p_393283_.getBlockEntity(p_395877_) instanceof TestInstanceBlockEntity testinstanceblockentity) {
            if (!p_396004_.canUseGameMasterBlocks()) {
                return InteractionResult.PASS;
            } else {
                if (p_396004_.getCommandSenderWorld().isClientSide) {
                    p_396004_.openTestInstanceBlock(testinstanceblockentity);
                }

                return InteractionResult.SUCCESS;
            }
        } else {
            return InteractionResult.PASS;
        }
    }

    @Override
    protected MapCodec<TestInstanceBlock> codec() {
        return CODEC;
    }
}